A policeman armed himself to protect others while bleeding from a gunshot wound that almost killed him.

A New Zealand man has been arrested in Darwin over a savage assault on an Irish backpacker in Sydney which left him unconscious for 218 days.

A retired policeman has come forward as the good Samaritan police were seeking in relation to events surrounding the murder of Donald Stewart.

Police are searching the area where dairy farmer Scott Guy was shot in an effort to find the gun used to kill him.

Rower Rob Hamill hopes to meet the Khmer Rouge henchman who ran the prison where his brother Kerry was tortured and killed.

A 28-year-old North Shore man has appeared in court over the murder of Jacqueline Blackbourn in a house fire last month.

A third police officer tried to taser a man accused of shooting two Christchurch constables yesterday.

Police dog Gage appears to have given up its life to save its handler and created some time to allow officers to escape from the scene of yesterday's shooting.

Sydney's real underbelly has been further rocked by the arrest of part-time model and socialite Shayda Bastani on a charge of conspiring to kill .

Guns could be made more accessible to police amid concerns about the growing number of officers being "ambushed".

Police are set to get greater access to firearms after two officers were shot and wounded in Christchurch today, according to Police Commissioner Howard Broad.

Two men have been taken into custody after a police dog was killed and two police officers injured in an armed incident in Christchurch.